a female from the same locality, presented by the Entomological 

 Club, in 1844 ; and a second female, taken at Marcha, near Yakutsk, 

 Siberia, on June 7th, 1900. According to Brauer, Th. borcalis ranges 

 from Lapland and Sweden to the Austrian Alps. 



Therioplectes montanus, Mg. 



Plate 14. 



In British specimens of this species there is a considerable 

 difference in appearance between the two sexes, due partly to the 

 male abdomen being more pointed at the tip (as is also the case in 

 other species), and partly to the contrast of colours in the abdomen 

 being much sharper in the male than in the female. Of three males 

 of Th. montanus in the Museum collection, from Loo Bridge, Co. 

 Kerr_\-, Ireland, the smallest is 12, the largest 13^ mm. in length ; the 

 length of seventeen Scotch and Irish females varies from 12 to 

 14^^ mm. Continental specimens are larger, and may attain a length 

 of 16 and 17 mm. in the case of the male and female respectively. 



The area of enlarged facets in the upper portion of the eyes of 

 the male is not sharply distinguished from the remainder of the 

 eye-surface. Brauer {/oc. cit., pp. 144- 145) describes the coloration 

 of the eyes of the male as " green, with three purple bands and red 

 lower margin bordering the face"; while, with reference to the female 

 he writes : " E\'es emerald-green, with three linear carmine-red 

 bands, the middle one of which often does not reach the hinder 

 margin of the eye ; upper and lower margin emerald-green." 



So far as regards the British fauna, TIi. montanus would appear 

 to be essentially a Scotch and Irish species, since the Museum 

 collection includes no specimens from England or Wales. Colonel 

 Yerbury's note runs : " Very common in Ireland, at Loo Bridge and 

 other places in County Kerry ; common, too, in Scotland, where in 

 July it succeeds Th. luridns in the sand-hills ; it also occurs, among 

 other localities, on the lower slopes of the Cairngorms." The Scotch 

 specimens in the Museum are from Invershin, Sutherland; Nairn; 

 Brodie, Elgin ; Nethy Bridge, Inverness-shire ; and Rannoch, Perth- 



